purple medicinal flowers in field. honey bees polinate plants. phacelia tanacetifolia or lacy phacelia - green manure

flower medicinal green blue purple medical healthcare meadow flora field nature violet plant summer blossom blooming bloom honey background agriculture bee nectar botany floral insect landscape lilac petal boraginaceae grassland farming aroma colorful wildflower countryside beautiful rural pollination plantation inflorescence aromatherapy pollen